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A Numerical Method to Model Non-linear Damping Behaviour of Martensitic Shape Memory Alloys

机译:马氏体形状记忆合金非线性阻尼行为建模的数值方法

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摘要

This article investigates the efficiency of hybridizing composites with thin layers of martensitic shape memory alloys for improvement of damping. The non-linear damping behaviour of martensitic shape memory alloys is simulated using a modified version of Masing’s rules. The model was implemented in a user subroutine of a finite element code, and validated by a numerical simulation of experimental hysteresis loops at different maximum strain amplitudes. The experimental free decay of hybridized glass fiber reinforced polymer beams was simulated using the finite element model, including the validated model of the investigated materials. The amplitude-dependent damping of the hybrid beams in free decay was reproduced successfully in the numerical analysis and it was proven that the hybridization technique is efficient for improvement of damping.
机译:本文研究了将复合材料与马氏体形状记忆合金薄层混合以提高阻尼的效率。马氏体形状记忆合金的非线性阻尼行为是使用Masing规则的修改版进行模拟的。该模型在有限元代码的用户子例程中实现,并通过在不同最大应变幅度下的实验磁滞回线的数值模拟进行了验证。使用有限元模型(包括所研究材料的验证模型)模拟了混杂玻璃纤维增​​强聚合物梁的实验自由衰减。在数值分析中成功地再现了混合梁在自由衰减中的振幅相关阻尼,并且证明了杂交技术对于改善阻尼是有效的。

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